Necessary preliminary tasks:
NOTE: Extract brake fluid out of expansion tank. Use a suction bottle used exclusively for drawing off brake fluid.
Do not reuse drawn out brake fluid.
Disconnect plug connection (1).
Release retaining screw (2).
Detach expansion tank (3) by pulling vertically upward.
IMPORTANT: Check rubber plugs (1) in brake master cylinder for damage and replace if necessary.
Push the expansion tank vertically onto the master brake cylinder.
BMW X3 Service & Repair Manual > Rear lid: Adjusting/replacing bump stops
Necessary preliminary tasks:
Remove luggage compartment wheel arch panel .
Following parts must not be damaged:
(1) Bump stop
(2) Lock nut (following illustration)
General view of rear side:
Adjust stop pads
Remove cap (1).
Adjust stop pad to correct height by turning screw (2) ...